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Moving part in a fluid

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Old   April 24, 2002, 10:34
Default Moving part in a fluid
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E. BOINOT
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Hi everybody

I'm trying to model a moving solid part (translation) in a fluid (a resin).

Can I simply apply a boundary condition to this part, i.e. a translational velocity? The problem is that it doesn't converge easily (even with decreasing the under-relaxation factors) Moreover, when the blade move (unsteady), the gap from the previous time step remains "black" in the graphics window, so I can't see the velocity in the gap

Shall I use another model? (sliding mesh, for example?)

Thanks a lot
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